Water balance studies for large and small river basins are the subject of this book. Here, the specific focus is on the soil and water assessment tools (SWAT) model coupled with geographic information system (GIS) remote sensing data for a comprehensive study. Some books available in the market provide an overview of different hydrological models for water balance but not specifically for the SWAT model. This book effectively utilizes the SWAT model to study the water balances in small and large catchments with consistent competence and excellent accuracy for yearly and monthly water balance modules along with suspended sediment yield over several slope classes of the catchments. The approach is new and has been successfully utilized, as discussed in a case study on the Taleghan Catchment in Iran. These implementation models may assist as advantageous techniques for incorporated management of catchments in the direction of sustainable development. This book will help readers who wish to study all the changes related to those in water balances.

There are approximately 500 different soil varieties in Malaysia, most is residual soil and coastal alluvial soil. This book presents a comprehensive overview of various aspects of soils in Malaysia. It covers topics including climate; flora and fauna; geology and hydrology; land use changes for agriculture; soil fertility; human-induced soil degradation; and soil contamination sources. It features information on the role of biological, chemical, mechanical, and physical factors in relation to soil properties. The book highlights land use impact, soil problems arising from contamination and its control methods, the management of problem soils, limiting materials as well as future soil issues. The presentation of different soils in Malaysia is organized through chapters based on two major soil groups (a) the sedentary soils formed in the interior on a wide range of rock types, and (b) the soils of the coastal alluvial plains. The book features information on how these various soil types affect the economy of the country and highlights the soil issues and challenges within the context of sustainable agriculture. Useful to graduate students of soil science, professionals, and agriculturalists, it provides extensive knowledge of agriculture soils in Malaysia in a concise and user-friendly manner.

There are approximately 500 different soil varieties in Malaysia, most is residual soil and coastal alluvial soil. This book presents a comprehensive overview of various aspects of soils in Malaysia. It covers topics including climate; flora and fauna; geology and hydrology; land use changes for agriculture; soil fertility; human-induced soil degradation; and soil contamination sources. It features information on the role of biological, chemical, mechanical, and physical factors in relation to soil properties. The book highlights land use impact, soil problems arising from contamination and its control methods, the management of problem soils, limiting materials as well as future soil issues. The presentation of different soils in Malaysia is organized through chapters based on two major soil groups (a) the sedentary soils formed in the interior on a wide range of rock types, and (b) the soils of the coastal alluvial plains. The book features information on how these various soil types affect the economy of the country and highlights the soil issues and challenges within the context of sustainable agriculture. Useful to graduate students of soil science, professionals, and agriculturalists, it provides extensive knowledge of agriculture soils in Malaysia in a concise and user-friendly manner.

A multidisciplinary study of the Bera Lake is presented here, focusing on natural resources throughout the lake s catchment area and assessing environmental impact. This applied limnology study examines issues relating to land development including soil erosion and nutrient loss in the catchment area, severe pollution of water, sediment resources in open waters and wetlands, and reduction of aquatic and bird populations. The chapters provide a comprehensive view of problems, risks and possible mitigation measures associated withthis great natural habitat in Malaysia. The book highlights the technology and methods used to estimate both soil erosion rate and nutrient loss from the lake catchment, including an explanation of the measurement of sedimentation rate in Bera Lake, using 137Cs and 210Pb radioisotopes. The author examines the current and historic situation of contamination in sediments, presents an ecological risk assessment and finally describes a master management plan, proposing practices to mitigate the environmental impacts of existing agricultural projects and practices to control future projects. Readers will learn of a decrease in the watershed supply of water to the Bera Lake, of shoaling, degradation of water and sediment quality and the extinction of several kinds of flora and fauna. This volume also offers an approach to sustainable land use, with regard to natural resources conservation."